Piperno, Dolores R. <br/><br/>
The silica bodies of tropical American grasses :  morphology, taxonomy, and implications for grass systematics and fossil phytolith identification / 
Dolores R. Piperno and Deborah M. Pearsall 
 - Washington, D.C. :  Smithsonian Institution Press,  1998 
 - iii, 40 p. :  ill. ;  28 cm. 
 - Smithsonian contributions to botany ;  no. 85 .
<br/><br/>Includes bibliographical references (p. 8-9) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Grasses--Cytotaxonomy--Latin America<br/>Grasses, Fossil--Identification<br/>Silica bodies (Plants)--Latin America